1 Answers
The term twice exceptional, often abbreviated as 2e, entered educators' lexicons in the mid-1990s and refers to gifted students who have some form of disability. These students are considered exceptional both because of their giftedness and because they are disabled. Ronksley-Pavia presents a useful conceptual model of the co-occurrence of disability and giftedness.
A 2e child is one who, along with being considered gifted in comparison to same-age peers, is formally diagnosed with one or more disabilities. Although 2e can refer to any general disability, it is often used to refer to students with learning disabilities, although research is not limited to these areas, and a more holistic view of 2e can help move the field forward. The learning associated disabilities can include dyslexia, visual or auditory processing disorder, obsessive–compulsive disorder, sensory processing disorder, autism spectrum disorder, Tourette syndrome, attention deficit hyperactivity disorder. 2e can also be associated with a diagnosis of anxiety or depression or any other disability interfering with the student's ability to learn effectively in a traditional environment. For example, 19% of dyslexic students were found to be superiorly gifted in verbal reasoning. Often children with 2e have multiple co-morbid disabilities that present as a paradox to many parents and educators.
There is no clear-cut profile of twice-exceptional children because the nature and disabilities of twice exceptionality are so varied. This variation among twice-exceptional children makes it difficult to determine just how many of them there might be. Best estimates of prevalence range from 300,000 to 360,000 in the U.S.. Linda Silverman, Ph.D., the director of the Gifted Development Center has found that fully 1/6 of the gifted children tested at the GDC have a learning difference of some type. In Australia, in 2010 a conservative estimate of the prevalence of 2e children was around 40,000, or approximately 10% of gifted Australian children, although other estimates have placed this much higher at 30% of gifted Australian children as being 2e.